Formula E

Formula E is a new FIA single-seater championship and the world's first fully-electric racing series. 

Beginning in September 2014 through to June 2015, the championship will compete in some of the world's leading cities - including London, Beijing and Miami. For the inaugural season, 10 teams, each with two drivers, will go head-to-head creating a unique and exciting racing series designed to appeal to a new generation of motorsport fans.

It represents a vision for the future of the motor industry over the coming decades, serving as a framework for R&D around the electric vehicle, accelerating general interest in these cars and promoting sustainability.

From season two, Formula E will operate as an 'open championship', allowing teams and manufacturers the opportunity to showcase their own electrical energy innovations. Working to the technical specifications set out by the FIA, teams will focus their efforts on improving and developing battery technology in the hope this will filter into the everyday electric vehicle market.

The championship centres around three core values of Energy, Environment and Entertainment and is a fusion of engineering, technology, sport, science, design, music and entertainment - all combining to drive the change towards an electric future.

Electric boat in Venice

Elica accoppiata a motore elettrico

Il dimensionamento dell' elica viene effettuato considerando il momento torcente del motore e quindi del numero di giri del motore a massimo momento torcente, quindi ragionando in termini di massima efficienza, quando si naviga a bassi giri (navigazione interna e lagunare) e a bassa velocità il rendimento dell' elica diminuisce, dato che la coppia cresce col numero di giri. La coppia del motore elettrico è costante quindi, anche quando si naviga a bassa velocità il rendimento dell' elica è costante e soprattutto la manovrabilità è molto maggiore anche a pochi giri.


The dimensioning of propeller is made considering the engine twisting moment and thus the number of revolutions of the engine when it is in the maximum twisting moment. Therefore, reasoning in terms of maximum efficiency, when you are sailing at low revolutions ( inland and lagoon navigation ) and at low speed, the productivity of propeller decreases, since the torque increases with the number of revolutions. The electric engine torque is constant even when you are sailing at low speed, the productivity of the propeller is ​​constant and above all the maneuverability is superior also with few revolutions.

(Traduzione a cura di Laura Pavanello)